We have one - it is a "Trek" brand so a bit more up-market than the ones you can get in Kmart or Target. It is super light (12kg from memory) and folds really easily. I was able to get it in and out of the back of our car (a holden stationwagon) when I was 8 months pregnant, and found it less bulky than the twin prams we road tested, not of which I could easily lift. It is a bike trailer as well as a pram and has a jogger wheel attachment too. Suspension is reasonable but because it has inflatabe tube tyres I haven't ever foudn bumps to be a problem. It is pretty well an all-terrain thing too.
The storage in the back is good - in fact when Ollie was tiny I used to put him in tha back on a pillow. You can buy infant inserts for them too. "Chariot" is the parent company of Trek, so they may bike trailers also, but they are a bit more expensive. HTH